/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* Copyright (c) 2002-2013 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.reporting.libraries.css.parser.stylehandler.box;
import org.pentaho.reporting.libraries.css.model.StyleKey;
import org.pentaho.reporting.libraries.css.parser.CSSValueFactory;
import org.pentaho.reporting.libraries.css.parser.stylehandler.OneOfConstantsReadHandler;
import org.pentaho.reporting.libraries.css.values.CSSAutoValue;
import org.pentaho.reporting.libraries.css.values.CSSNumericType;
import org.pentaho.reporting.libraries.css.values.CSSNumericValue;
import org.pentaho.reporting.libraries.css.values.CSSValue;
import org.pentaho.reporting.libraries.css.values.CSSValuePair;
import org.w3c.css.sac.LexicalUnit;
/**
* Creation-Date: 27.11.2005, 21:48:44
*
* @author Thomas Morgner
*/
public class FitPositionReadHandler extends OneOfConstantsReadHandler {
public static final CSSNumericValue CENTER =
CSSNumericValue.createValue( CSSNumericType.PERCENTAGE, 50 );
public static final CSSNumericValue TOP =
CSSNumericValue.createValue( CSSNumericType.PERCENTAGE, 0 );
public static final CSSNumericValue LEFT =
CSSNumericValue.createValue( CSSNumericType.PERCENTAGE, 0 );
public static final CSSNumericValue BOTTOM =
CSSNumericValue.createValue( CSSNumericType.PERCENTAGE, 100 );
public static final CSSNumericValue RIGHT =
CSSNumericValue.createValue( CSSNumericType.PERCENTAGE, 100 );
public FitPositionReadHandler() {
super( false );
}
public CSSValue createValue( StyleKey name, LexicalUnit value ) {
if ( value.getLexicalUnitType() == LexicalUnit.SAC_IDENT ) {
final String stringValue = value.getStringValue();
if ( stringValue.equalsIgnoreCase( "auto" ) ) {
return CSSAutoValue.getInstance();
}
}
final CSSValue firstPosition = parseFirstPosition( value );
if ( firstPosition == null ) {
return null;
}
value = value.getNextLexicalUnit();
final CSSValue secondPosition = parseSecondPosition( value, firstPosition );
if ( secondPosition == null ) {
return null;
}
return createResultList( firstPosition, secondPosition );
}
protected CSSValue parseFirstPosition( final LexicalUnit value ) {
if ( value == null ) {
return null;
}
if ( value.getLexicalUnitType() == LexicalUnit.SAC_IDENT ) {
if ( "left".equalsIgnoreCase( value.getStringValue() ) ) {
return LEFT;
} else if ( "center".equalsIgnoreCase( value.getStringValue() ) ) {
return CENTER;
} else if ( "right".equalsIgnoreCase( value.getStringValue() ) ) {
return RIGHT;
} else if ( "top".equalsIgnoreCase( value.getStringValue() ) ) {
return TOP;
} else if ( "bottom".equalsIgnoreCase( value.getStringValue() ) ) {
return BOTTOM;
}
// ignore this rule.
return null;
}
if ( value.getLexicalUnitType() == LexicalUnit.SAC_PERCENTAGE ) {
return CSSNumericValue.createValue( CSSNumericType.PERCENTAGE,
value.getFloatValue() );
}
if ( CSSValueFactory.isLengthValue( value ) ) {
return CSSValueFactory.createLengthValue( value );
}
// contains errors, we ignore this rule.
return null;
}
protected CSSValuePair createResultList( CSSValue firstPosition,
CSSValue secondPosition ) {
if ( firstPosition == TOP || firstPosition == BOTTOM ) {
return new CSSValuePair( secondPosition, firstPosition );
} else if ( secondPosition == LEFT || secondPosition == RIGHT ) {
return new CSSValuePair( secondPosition, firstPosition );
} else {
return new CSSValuePair( firstPosition, secondPosition );
}
}
protected CSSValue parseSecondPosition( final LexicalUnit value,
final CSSValue firstValue ) {
if ( value == null ) {
return CENTER;
}
if ( value.getLexicalUnitType() == LexicalUnit.SAC_IDENT ) {
if ( "left".equalsIgnoreCase( value.getStringValue() ) ) {
return LEFT;
} else if ( "center".equalsIgnoreCase( value.getStringValue() ) ) {
return CENTER;
} else if ( "right".equalsIgnoreCase( value.getStringValue() ) ) {
return RIGHT;
} else if ( "top".equalsIgnoreCase( value.getStringValue() ) ) {
return TOP;
} else if ( "bottom".equalsIgnoreCase( value.getStringValue() ) ) {
return BOTTOM;
}
return null; // ignore this rule, it contains errors.
}
if ( value.getLexicalUnitType() == LexicalUnit.SAC_PERCENTAGE ) {
return CSSNumericValue.createValue( CSSNumericType.PERCENTAGE,
value.getFloatValue() );
} else if ( CSSValueFactory.isLengthValue( value ) ) {
return CSSValueFactory.createLengthValue( value );
}
return CENTER;
}
}